Role of early-stage atmosphere in the dehydrogenation reaction of the LiBH4-YH3 composite
- Role of early-stage atmosphere in the dehydrogenation reaction of the LiBH4-YH3 composite
- 김기범; 심재혁; 오규환; 조영환
- Hydrogen storage; Metal hydride; Metal borohydride; Reactive hydride composite; Complex metal hydride; Dehydrogenation; Argon; X-ray diffraction; Raman spectroscopy; Back pressure
- Issue Date
- The Journal of Physical Chemistry C
- VOL 117, NO 16, 8028-8031
- This article investigates the dehydrogenation behavior of the LiBH4−YH3
composite under various early-stage Ar back-pressure conditions. It is clearly observed
that a minute change in early-stage atmosphere greatly affects the overall dehydrogenation
reaction of the composite. Free boron and Li2B12H12 start to form in turn as the
partial dehydrogenation products around 400 °C under static vacuum or low Ar back
pressure. The formation of Li2B12H12 greatly increases the activation energy for the
dehydrogenation reaction between LiBH4 and YH3 into LiH and YB4, hence significantly
retarding the reaction. The formation of B just slightly increases the incubation period of
the reaction. The formation of Li2B12H12 is effectively suppressed by initially applying Ar
back pressure above 0.1 MPa.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.